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Scratch-Built RC Car 

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Scratch-Built RC Car 

Written By: Three Guys 



Oscillatinq table saw (1) 

Electric drill, motor (1) 

Screwdriver, Flat head (1) 

Electric drill, throttle switch (1) 

Screwdriver, Phillips head (1) 

Electric drill, batterv pack (1) 

Soldering iron (1) 

Zip ties (1) 

Wire stripper/crimper (1) 

medical syrinqe (4) 

hand-held electric drill (1) 

RC Transmitter (1) 

jig saw (1) 

RC receiver (1) 

wire snips (1) 

RC receiver battery M) 

Servo (2) 

Vacuum belt (1) 

RC wheels (4) 

1/2" PVCtubina (Multiple) 

1/2" PVC connectors (Multiple) 

RC ON/OFF switch (1) 

Pea board (1) 

Svrinae cap (4) 

RC wheel mount (4) 

RC axle (2) 


This guide will share ideas for common materials you can use to create a one-of-a-kind 
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Scratch-Built RC Car 
remote-controlled car. 

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Scratch-Built RC Car 

Step 1 — Open electric drill 


• Remove battery pack from drill. 

• Remove screws as shown. 

Step 2 — Remove drill motor and speed control 

• Split electric drill in half. 

• Remove electric drill motor and throttle switch assembly. 

• Remove drill motor from casing and throttle switch from throttle body as shown. 

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Scratch-Built RC Car 

Step 3 — Build chassis 

• We recommend that you arrange the PVC connectors on the table to determine your 
chassis profile. Here was our initial step. 

• We cut pieces of PVC tubing to create the chassis frame. 

• Here is the final chassis design. 

Step 4 — Create suspension system 

• Mount upper and lower swing arms to RC wheel mount as shown. Ensure movement of 
swing arms. 

• Test wheel on suspension arms for clearance between chassis frame and ground. 

• Use medical syringe with cap to create strut. 

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Scratch-Built RC Car 

Step 5 

• Mount handle of syringe to chassis frame as shown. 

• Create recessed notch for syringe cap to interface with lower swing arm as shown. 

• Repeat for all four wheel positions. 

Step 6 — Throttle system 

• Modify throttle switch by removing inner throttle button spring and replacing with lighter- 
duty outer spring as shown. Use a washer and pin to keep outer spring in place. 

• Next, drill a hole through the throttle button, through the throttle assembly and fish through 
fishing line as shown. 

• Tie ends of fishing line to servo arms as shown. 

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Scratch-Built RC Car 

Step 7 — Drive system 

• Use RC axles to connect rear wheels together. Route the axles through a piece of PVC 
tubing with a hole to feed the vacuum belt through as shown. Secure PVC tubing to 

• Mount electric drill motor to chassis as shown. Create a wooden drum with a shoulder to 
ensure that the vacuum belt stays in place. 

Step 8 — Steering system 

Mount servo to chassis as shown. Create and mount steering servo connector piece as 
shown. Connect steering arms to the connector piece as shown. 

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Scratch-Built RC Car 

Step 9 — Radio-control system 

• Mount receiver to chassis. 

• Mount battery pack for receiver to chassis. 

• Connect steering and throttle servo wires to receiver. 

Step 10 

Finished product! 

last generated on 2012-12-27 04:14:33 AM. 

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